DE102021126810A1 - Method of making a cookware and cookware - Google Patents

Abstract

Method for producing a cooking utensil (1), having at least the following steps: a) providing a cooking vessel (2) with a base (3); b) producing a first coating (4) made of silicone or plastic on the base (3); c) arranging a coil (5) for converting electromagnetic radiation into electrical energy on the first coating (4); andd) producing a second coating (6) made of silicone or plastic, which at least partially covers the coil (4). In addition, a corresponding cooking utensil (1) is proposed.

Description

The invention relates to a method for producing a cookware and a cookware that can be used in particular for the preparation of hot meals.

There are cookware, such as pots or pans known, by means of which food can be heated on a stovetop. Such cookware can have electrical consumers, such as temperature sensors, displays, controls and/or data communication devices, which require electrical energy to operate. The electrical energy can be provided using batteries, for example, which, however, have to be replaced regularly. For this reason, cookware with induction coils are known, through which electromagnetic radiation from an induction cooker can be converted into electrical energy. Disadvantages of these cookware, however, are their high production costs and only a small amount of electrical energy.

Proceeding from this, it is the object of the present invention to at least partially solve the problems outlined with reference to the prior art and in particular to specify a method for producing cookware with the induction coil of which a large amount of electrical energy can be generated in relation to the production costs of the cookware. In addition, a cookware should also be specified, with the induction coil of which a large amount of electrical energy can be generated in relation to the manufacturing complexity of the cookware.

These objects are solved by the features of the independent patent claims. Further advantageous refinements of the invention are specified in the dependent patent claims. It should be pointed out that the features listed individually in the dependent patent claims can be combined with one another in any technologically meaningful manner and define further refinements of the invention. In addition, the features specified in the patent claims are specified and explained in more detail in the description, with further preferred configurations of the invention being presented.

1. a) Bereitstellen eines Gargefäßes mit einem Boden;
2. b) Erzeugen einer ersten Beschichtung aus Silikon oder Kunststoff auf dem Boden;
3. c) Anordnen einer Spule zur Umwandlung elektromagnetischer Strahlung in elektrische Energie auf der ersten Beschichtung; und
4. d) Erzeugen einer zweiten Beschichtung aus Silikon oder Kunststoff, die die Spule zumindest teilweise überdeckt.

A method for producing a cookware that has at least the following steps contributes to this:

1. a) providing a cooking vessel with a base;
2. b) creating a first coating of silicone or plastic on the floor;
3. c) placing a coil for converting electromagnetic radiation into electrical energy on the first coating; and
4. d) creating a second coating of silicone or plastic that at least partially covers the coil.

The cooking utensil can be a pot or pan, for example. Food can be cooked and/or prepared with the cooking utensil on a cooker, in particular an induction cooker or induction hob. in a step a) a cooking vessel is provided. The cooking vessel can be at least partially pot-shaped and/or pan-shaped. Furthermore, the cooking vessel can consist at least partially of metal, sheet metal or stainless steel. In addition, the cooking vessel can have a cooking space for the food with a bottom. The bottom can have at least one plate, which can be at least partially round or angular, for example. Furthermore, the floor or at least one of the at least one plate of the floor can consist at least partially of a ferromagnetic material or metal. The cooking space can be delimited, for example, by a top side of the base and/or a side wall of the cooking utensil or the cooking vessel. Furthermore, the cooking space can have an upper opening that can be closed, for example, by a lid. In addition, the cooking chamber can have a volume of 1 l (litres) to 16 l, for example. The cooking utensil, the cooking vessel, the base, the side wall, the cooking space and/or the top opening of the cooking space can have a central axis or longitudinal axis. Furthermore, the cooking utensil, the cooking vessel, the base, the side wall, the cooking chamber and/or the upper opening of the cooking chamber can be at least partially rotationally symmetrical to the central axis or longitudinal axis. The central axis or longitudinal axis run (when using the cooking utensil on the stove) in particular in a vertical direction.

In a step b), a first coating of silicone or plastic is produced on the floor. For example, the first coating can be cast from a 2-component silicone. The plastic can be polyetheretherketone (PEEK), for example. The first coating can in particular extend over the entire floor. Furthermore, the first coating can extend at least partially over a side wall of the cooking vessel. Furthermore, the first coating can be cup-shaped. In addition, the first coating can in particular adhere firmly to the bottom and/or the side wall.

In step c), a coil for converting electromagnetic radiation into electrical energy placed on the first coating. The coil is thus electrically insulated in particular from the cooking vessel. The electromagnetic radiation can in particular be an alternating magnetic field of the cooker, by means of which the cookware can be heated during cooking and/or frying. The electromagnetic radiation can induce an electrical voltage in the coil, by means of which, for example, an electrical energy store in the cooking utensil can be charged. The electrical energy store can be an accumulator or a capacitor, for example. The electrical energy generated by the coil can be used to operate an electrical consumer of the cooking utensil. The electrical load can be, for example, an electronic component, a controller, a microprocessor, a radio device, a data communication device, a sensor, a temperature sensor, a display, a light source and/or a loudspeaker. The coil can have an annular and/or spiral-shaped area. The ring-shaped and/or spiral-shaped area can be formed in the area of the base and/or concentrically to the central axis or longitudinal axis. Furthermore, the coil can have an area that extends from the ring-shaped or spiral-shaped area, for example (with respect to the central axis or longitudinal axis) in a radial direction, to a peripheral surface of the base and/or the side wall. In step c), the coil can be fixed to the first coating, for example by means of an adhesive bond.

In a step d), a second coating made of silicone or plastic is produced, which at least partially covers the coil. For example, the second coating can be cast from the 2-component silicone. The plastic can also be polyetheretherketone (PEEK), for example. The first coating and the second coating can thus consist of the same material. In addition, the first coating and/or the second coating can be resistant to high temperatures, for example up to a temperature of 300° C. (Celsius). The second coating can in particular extend over the entire floor. Furthermore, the second coating can extend at least partially over the side wall of the cooking vessel. Furthermore, the second coating can be cup-shaped. In addition, the second coating can, in particular, adhere firmly to the first coating and/or the coil. The coil is thus at least partially arranged or encapsulated between the first coating and the second coating. As a result, the coil is at least partially insulated from the surroundings of the cooking utensil or protected against dirt by the second coating.

In step b), the first coating can be produced on the base and a side wall of the cooking vessel.

In step d), the second coating can be produced on the base and a side wall of the cooking vessel.

In step b) the first coating or in step d) the second coating can be or have been produced by compression molding or injection molding. In the case of compression molding, the cooking vessel can be introduced into a cavity of a mold with a molding compound in the cold or preheated state, for example in powder form or granulate form. The molding compound can then be liquefied by means of an elevated temperature and/or the mold can be closed, for example using a pressure piston. After the mold has cooled and/or the molding composition has solidified, the mold can be opened again and the cooking vessel with the first coating or second coating can be removed from the mold. In the case of injection molding, the cooking vessel can be arranged in an injection mold and, after the injection mold has been closed, a molding compound for forming the first coating or second coating can be injected under pressure into the injection mold. After the molding composition has solidified, for example by cooling and/or a crosslinking reaction, the injection mold can be opened again and the cooking vessel with the first coating and/or the second coating can be removed from the injection mold again.

The first coating can be produced or implemented with a first layer thickness of 0.5 mm (millimeters) to 5 mm and/or the second coating with a second layer thickness of 0.5 mm to 5 mm. In particular, the first coating has a first layer thickness of preferably 1.5 mm to 2.5 mm, particularly preferably (substantially) 2 mm, and/or the second coating has a second layer thickness of preferably 1.5 mm to 2.5 mm , particularly preferably (substantially) 2 mm. The first layer thickness and/or the second layer thickness are dimensioned in particular perpendicular to the bottom of the cooking vessel. The coil or the ring-shaped and/or spiral-shaped area of the coil can thus be spaced apart from the cooking vessel or the bottom of the cooking vessel by at least a distance equal to the first layer thickness of the first coating.

The first coating and/or the second coating can be non-transparent will be. This can mean in particular that the first coating and/or the second coating is/are colored. For example, the first coating and/or the second coating can be black.

The coil may be single turn, if desired, to harvest electrical energy. Such a design is useful if, for example, only a low energy level is sufficient and/or the production costs are to be reduced, because coil material can be saved with such a design.

The coil may be formed with an electrical conductor having a plurality of turns. In particular, this can mean that the electrical conductor extends several times and/or completely around the central axis or the longitudinal axis. The electrical conductor can be designed, for example, in the manner of a metal cable or wire and/or consist at least partially of metal, such as copper or aluminum. Furthermore, the electrical conductor can be encased with an insulating material, in particular a non-metallic one, and/or have a single-core or multi-core design. The electrical conductor can, for example, have at least 2 turns, preferably at least 5 turns. For example, the electrical conductor can have 2 to 50 turns, preferably 2 to 10 turns, particularly preferably 5 turns. The windings can in particular extend parallel to the underside of the base, orthogonally to the central axis or longitudinal axis and/or around the central axis or longitudinal axis. Furthermore, the windings can be formed in particular in the ring-shaped and/or spiral-shaped area of the coil.

The electrical conductor can be designed at least partially in the form of a spiral. In particular, the windings of the electrical conductor are formed in a spiral shape. In particular, this can also mean that the electrical conductor or the windings of the electrical conductor do not run in a meandering manner. The electrical conductor can have a line diameter of 0.05 mm to 5 mm. The electrical conductor can preferably have a line diameter of 0.5 mm. The turns of the coil can have a diameter of 50 mm to 300 mm. The diameter is preferably 50 mm to 200 mm, particularly preferably 100 mm to 150 mm. For example, the diameter can be (substantially) 125 mm. The diameter is to be understood in particular as an outer diameter of the ring-shaped and/or spiral-shaped area of the electrical conductor. Furthermore, the diameter is measured in particular parallel to the bottom and/or orthogonally to the central axis or longitudinal axis. The coil can be arranged concentrically to the floor. This can mean in particular that the ring-shaped area of the coil or the housing is formed concentrically to the central axis or longitudinal axis.

After step b), a temperature sensor can be placed on the floor. The temperature sensor can, for example, be in the form of a thermocouple and/or have a connecting cable. Furthermore, the temperature sensor can be arranged in particular in a center of the base and/or on the cooking vessel. For this purpose, the temperature sensor can, for example, be inserted through the first coating and/or an opening can be formed in the first coating. In particular, the connection cable can run at least partially on the first coating and/or between the first coating and the second coating.

• - ein Gargefäß mit einem Boden;
• - eine erste Beschichtung aus Silikon oder Kunststoff, die auf dem Boden ausgebildet ist;
• - eine Spule zur Umwandlung elektromagnetischer Strahlung in elektrische Energie, wobei die Spule auf der ersten Beschichtung angeordnet ist; und
• - eine zweite Beschichtung aus Silikon oder Kunststoff, die die Spule zumindest teilweise überdeckt.

According to a further aspect, cookware is also proposed, which comprises at least the following:

• - a cooking vessel with a bottom;
• - a first coating of silicone or plastic formed on the bottom;
• - a coil for converting electromagnetic radiation into electrical energy, the coil being arranged on the first coating; and
• - A second coating of silicone or plastic that at least partially covers the coil.

The cooking utensil is preferably produced according to the method according to the invention.

For further details on the cooking utensil, reference is made to the further description in full or possibly also independently of the method described, in particular with regard to the preferred structural features of the cooking vessel, the first coating, the coil and/or the second coating.

An advantage of the invention that should be emphasized is that a high thermal, mechanical and corrosive resistance is achieved by the type of design and choice of material for the induction coil and the adjacent coatings. In addition, the thin layer structure enables a compact and space-saving design.

• 1: ein Kochgeschirr in einer Explosionsdarstellung.

The solutions presented here and their technical environment are described below using the Figure explained in more detail. It should be pointed out that the invention should not be limited by the exemplary embodiment shown. In particular, unless explicitly stated otherwise, it is also possible to extract partial aspects of the facts explained in the figure and to combine them with other components and/or findings of the present description. It shows as an example and schematically:

• 1 : a cookware in an exploded view.

1 shows a cookware 1 in an exploded view, which is designed here in the manner of a saucepan.

In the production of the cooking utensil 1, a cooking vessel 2 with a base 3 was provided in a step a). A cooking chamber 13 is formed in the cooking vessel 2 and is delimited by the base 3 and a side wall 7 of the cooking vessel 2 . food can be prepared in the cooking chamber 13 when using the cooking utensil 1 . The cooking vessel 2 and the base 3 have a common central axis 14 about which the cooking vessel 2 and the base 3 are (substantially) rotationally symmetrical.

The base 3 and an outer surface 15 of the side wall 7 were coated in a step b) with a first coating 4 which is electrically non-conductive and has a first layer thickness 8 .

After step b), a coil 5 for converting electromagnetic radiation into electrical energy was arranged on the first coating 4 in a step c). The coil 5 has an electrical conductor 10 which comprises a plurality of spiral turns 11 in a spiral region 16 of the coil 5 . The spiral-shaped area 16 or the windings 11 extend (essentially) concentrically around the central axis 14. A first longitudinal end 17 and a second longitudinal end 18 of the electrical conductor 10 are connected to an electrical consumer or electrical energy store, not shown here. which can be arranged in a handle 19 of the cookware 1. The electrical conductor 10 extends from its longitudinal ends 17, 18 over the first coating 4 along the side wall 7 to the base 3 of the cooking vessel 2 and runs in the area of the base 3 on the first coating 4 in a radial direction 20 (in relation to the central axis 14) to the spiral-shaped area 16 of the coil 5 or of the electrical conductor 10. An electrical current can thus flow between the first longitudinal end 17 and the second longitudinal end 18 of the electrical conductor 10. Furthermore, a temperature sensor 12 was arranged in a central area of the base 3, the connecting cable 21 of which extends through the first coating 4 and runs on the first coating 4 along the base 3 and the side wall 4 into the handle 19.

After step c), a second coating 6 was produced in a step d), which is electrically non-conductive and has a second layer thickness 9 . The second coating 6 has been formed on the first coating 4, the coil 5 and the connecting cable 21 of the temperature sensor 12 and extends over the side wall 7 and the bottom 3 so that the coil 5 and the connecting cable 21 of the temperature sensor 12 are sandwiched between the first coating 4 and the second coating 6 are arranged. As a result, the coil 5 and the connection cable 21 of the temperature sensor 12 are not visible and are protected against dirt.

With the present invention, a large amount of electrical energy can be generated in relation to the production costs.

Reference List

1

cookware

2

cooking vessel

3

Floor

4

first coating

5

Kitchen sink

6

second coating

7

Side wall

8th

first layer thickness

9

second layer thickness

10

electrical conductor

11

turns

12

temperature sensor

13

cooking chamber

14

central axis

15

outer surface

16

spiral area

17

first longitudinal end

18

second longitudinal end

19

Handle

20

radial direction

21

connection cable

Claims (10)

Method for producing a cookware (1), having at least the following steps: a) providing a cooking vessel (2) with a base (3); b) creating a first coating (4) of silicone or plastic on the floor (3); c) arranging a coil (5) for converting electromagnetic radiation into electrical energy on the first coating (4); and d) producing a second coating (6) made of silicone or plastic, which at least partially covers the coil (4). procedure after Claim 1 , wherein in step b) the first coating (4) on the bottom (3) and a side wall (7) of the cooking vessel (2) is produced. Method according to one of the preceding claims, wherein in step d) the second coating (6) is produced on the base (3) and a side wall (7) of the cooking vessel (2). Method according to one of the preceding claims, wherein in step b) the first coating (4) or in step d) the second coating (6) is produced by means of compression molding or injection molding. Method according to one of the preceding patent claims, wherein the first coating (4) has a first layer thickness (8) of 0.5 mm to 5 mm or the second coating (6) has a second layer thickness (9) from 0.5 mm to 5 mm are generated. Method according to one of the preceding claims, wherein the first coating (4) or the second coating (6) is non-transparent. Method according to one of the preceding claims, in which the coil (5) is formed with an electrical conductor (10) which has a plurality of turns (11). procedure after Claim 7 , wherein the electrical conductor (10) is formed at least partially in a spiral shape. Method according to one of the preceding claims, wherein after step b) a temperature sensor (12) is arranged on the floor (3), the connection cable 21 of which runs at least partially on the first coating (4). Cookware (1), at least comprising: - A cooking vessel (2) with a base (3); - a first coating (4) of silicone or plastic formed on the bottom (3); - A coil (5) for converting electromagnetic radiation into electrical energy, the coil (5) being arranged on the first coating (4); and - A second coating (6) made of silicone or plastic, which at least partially covers the coil (5).

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